671506001 has 8 divisors (see below), whose sum is σ = 721021824. Its totient is φ = 623103040.

The previous prime is 671505983. The next prime is 671506013. The reversal of 671506001 is 100605176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671506001 - 2⁶ = 671505937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (671506021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276965 + ... + 279378.

It is an arithmetic number, because the mean of its divisors is an integer number (90127728).

Almost surely, 2^671506001 is an apocalyptic number.

It is an amenable number.

671506001 is a deficient number, since it is larger than the sum of its proper divisors (49515823).

671506001 is a wasteful number, since it uses less digits than its factorization.

671506001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556431.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 671506001 is about 25913.4328293262. The cubic root of 671506001 is about 875.6891446017.

The spelling of 671506001 in words is "six hundred seventy-one million, five hundred six thousand, one".